The vertices of AJKL have coordinates J(5, 1), K(-2, -3), and L(-4,1). Under which transformation is AJ 'K 'L' not congruent to AJKL?
0 A translation of two units to the right and two units down.
O A dilation with a scale factor of 2 and centered at the origin
A counterclockwise rotation of 180 degrees around the origin
O A reflection over the x-axis

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.